They still do.
The recommended method of preserving HC110 is to work from the most
concentrated syrup, split original bottle, (16oz for example), into
smaller bottles, old fashioned 2 to 4 oz. brown glass medicine bottles,
are what I used to use, (wish I could find mine, I have a 16oz bottle of
vintage HC110 that needs to be split). Fill the smaller bottles up to
very top to minimize contact Oxygen and cap them tightly. When using up
one of the bottles you can drive off most of the Oxygen by replacing it
with a more inert gas, nitrogen would probably be best, but since that's
usually unavailable to me, I spray some derivative of Freon, sold as
DustOff, Dust Remover, or some such, into the top of the small bottle
before capping it. The new stuff isn't quite as non-reactive as Freon
used to be but it still beats free oxygen.
On 1/10/2016 9:39 PM, Darren Addy wrote:
Your stock HC-110 or your diluted developer?
The main enemy of chemistry is air. They used to sell Air Evac bottles
that looked like round bellows that you could use to express any
excess air before screwing on the bottle lid, with the chemistry
inside at the edge of overflowing.
Other than that, I'm not sure what you can do.
On Sun, Jan 10, 2016 at 8:24 PM, Collin B <[email protected]> wrote:
I don't process as much b&w as I would like. My HC110 turns red or pink and
becomes unusable. What is the best way to keep it long term?
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